Piezo-electric transceiver for a vibration sensor, vibration sensor with such a Piezo-electric transceiver, and method for producing a Piezo-electric transceiver for a vibration sensor

Abstract

A Piezo-electric transceiver for a vibration sensor, with the Piezo-electric transceiver being embodied as a separately handled unit with a drive seat comprising a mechanical connection section for connecting the Piezo-electric transceiver to a mechanical oscillation unit of the vibration sensor.

We claim: 
     
       1. A Piezo-electric transceiver for a vibration sensor, wherein the Piezo-electric transceiver is embodied as a preassembled, ready-to-use unit with a drive seat with a mechanical connection section for connecting the Piezo-electric transceiver to a diaphragm of the vibration sensor wherein the drive seat comprises a fastening section for fastening and pre-stressing a stacked Piezo-drive in the drive seat and the stacked Piezo-drive is clamped to the drive seat. 
     
     
       2. The Piezo-electric transceiver according to  claim 1 , wherein the stacked Piezo-drive comprises a stack with a Piezo unit showing at least one Piezo-element as well as an adjustment ceramic arranged respectively in the stack above and below the Piezo-unit. 
     
     
       3. The Piezo-electric transceiver according to  claim 2 , wherein in the stack above and below the adjustment ceramic respectively, a metallic pressure piece is arranged. 
     
     
       4. The Piezo-electric transceiver according to  claim 3 , wherein the pressure pieces, the adjustment ceramics, as well as at least one Piezo-element are formed with circular external contours and show an identical diameter. 
     
     
       5. The Piezo-electric transceiver according to  claim 2 , wherein the stacked Piezo-drive is sintered into a monoblock. 
     
     
       6. The Piezo-electric transceiver according to  claim 1 , wherein the stacked Piezo-drive is clamped to the drive seat. 
     
     
       7. The Piezo-electric transceiver according to  claim 5 , wherein the Piezo-elements each show a groove, in which a connection line is arranged for contacting the Piezo-elements. 
     
     
       8. A vibration sensor with a mechanical oscillation unit arranged thereat that can be set into vibration and a second connection section for connecting a diaphragm of the vibration sensor to a Piezo-electric transceiver such that vibrations of the Piezo-electric transceiver are transferred to the diaphragm and vibrations of the diaphragm are transferred to the Piezo-electric transceiver, wherein the Piezo-electric transceiver is formed as a separately handled unit according to  claim 1 .